Lock construction



LOCK CONSTRUCTION Filed Feb. 19, 1934 l2 INVENTOR 6 H6727? K BY p [3a, 0' FM ATTORNEYS 4 Patented July 21, 1936 LOCK CONSTRUCTION Henry F- Keil, Scarsdale, N. Y., assignor to Francis Keil & Son, Inc., a corporation of New York Application February 19, 1934, Serial No. 711,976

15 Claims.

This invention relates to key-controlled lock mechanism.

One of the objects of this invention is to: provide a simple, thoroughly practical, and reliable key-controlled lock mechanism in which assembly and disassembly of the parts. may be readily and inexpensively achieved. Another object is to provide a construction which will be thoroughly dependable in action and rugged in construction. Another object is to provide a lock construction in which repair or replacement of parts may be dependably accommodated and thus avoid the great inconvenience, annoyance, and expense in the course of repairs of attempting to duplicate or replace broken or worn out parts. Another object is to provide a construction which may be inexpensively and rapidly manufactured. Other objects will be in part obvious or in part pointed out hereinafter.

The invention accordingly consistsinthe features of construction, combinations of elements, and arrangements of parts as will be exemplified in the structure to be hereinafter described and the scope of the application of' which willbe indicated in the following claims.

In theaccompanying drawing in which is shown one of'various possible embodiments of my invention,

Figure 1 is a vertical sectional view;

Figure 2 is a plan view as seen from the top in Figure 1 but showing the parts in relation to a door, or the like;

Figure 3'isa plan view of apart shown in Figure 1 but omitted in Figure 2;

Figure 4 is a transverse sectional view as seen, for example, on the line 4-4 of Figure 1;

Figure 5 is an end view, as seen from the left in Figure 1, of the key plug or cylinder, and

Figure 6 is aperspective View of 'a connecting bar.

Similar reference characters refer to similar parts throughout the several views ofthe drawing.

Referring first toFi'gure 1 I have showna cas- 45 ing generally indicated at I and constructed, as

hereinafter described, so asto facilitate die casting, though it isto-be understood that the casing 10- may be constructed in any suitable manner in general of cylindrical shape andhas a cylin controlling devices and illustratively these may take the form of the so-called wafer type of tumbler, such as is shown at [3 inFigure 4, there" being a suitable number of these tumblers, i1lus-- tratively five, as indicated in Figure 1, being received in suitable recesses l4 extending trans- 5 versely through the key cylinder I2.

These wafer tumblers [3, usually in the form of sheet metal stampings, are pressed downwardly, as viewed in Figure 4, each bya spring I5 carried in a suitable recess or extension of the 10 recess M in the key plug I2.

When thus pressed downwardly the lower ends w (Figure 4') enter a longitudinally extending slot or recess [6 in the bottom of the bore II in the casing iii, and thus preclude rotation of the plug 92 relative to the casing l0. The plug I2 is provided with a key-receiving groove ll extending centrally and lengthwise thereof and all of the tumblers l3 have a hole therethrough through which the key may pass. Accordingly, when the proper key is inserted, each tumbler is raised by the key against the action of the spring [5 by an amount sufiicient to bring the tumbler within theperipheral confines of the plug l'2', whereupon rotation of the plug I2 by the key may take place. Diametrically opposite the tumbler-receiving slot I6 is a similar tumbler-receiving slot I8 with which the tumblers may similarly coact after a 180 rotation of the key plug l2. In so far as this tumbler construction and action are concerned, they may take any suitable form and the above is intended to be illustrative.

The right-hand end of the key plug [2 is flanged as at ii to be received within a rabbet Is of the front cylindrical flange l9 at the righthand end and integrally formed as a part of the casing 18, flange i9 resting against the door or like member indicated at ZFJin'Figure 2'. Flange [2 thus limits movement of the key plug Win a direction toward the left relative-to thecasing I0; 40

cess of the width of the connecting or operating bar 2| (Figures 2 or 6) whichis to connect the key plug [2 to any suitable bolt-operating mechanism diagrammatically indicated in Figures 1' and 2'at 22. The connecting bar 2|, at its one end,. has

lateral projections 2 l 2 l giving the right-hand end, as viewed in Figure 6, substantially the shape of a T. Accordingly, before inserting the key plug l2 into the bore l l the connecting bar 21. is" inserted through the hole Hl in the end wall of easing I0, this insertion being done by way of the a 309-40 (Figure 4) ,an1abutment, 3!] forming the,

left-hand end wall (Figure 1) and a'right-hand ing bar 2| being received within the slot [2 of the key plug I 2. 'Thus, a secure driving connectionbetween key plug I2 and connecting bar 2| isinsured p Adjacent the left-hand end of the keycylinder l2, the latter is provided with a peripheral groove or recess 12 (Figure 1) ,with which coacts a means, aboutto be described, for preventing the key plug l2 from moving toward the right. and hence from becoming disassembled from the casinglfl, V a

The casing I0 is in general of cylindrical shape,

(Figure '4) but at its upper part and extending lengthwise, thereof and integrally formed there- Y r with'is a chamber forming portion generally in dicated at being provided with side walls end wall 30 formed virtually by the front flange l9 ofthecasing l0."

Thelabutment 3110 (Figures 1 and 2) is provided gwith a channel or hole 31 communicating with the bore ll of the casing l0 and it is in alinement with the peripheral groove l 2f(see Figure =1) in the left-hand end of the, key plug 12. Through this U channel3l there is inserted any suitable means, {such asrand preferably a pin 32 headed as. at

32?, the, pin being of sufficient length. to extend into the peripheral slotor groove l2 in the plug l2, thus preventing axial movement of the plug 12 relative to the casing I0,

ready access thereto, I undercut or groove the opposed sidewalls 30%30 (Figure 4) of the chamber-forming portion .30, as ,at 30 and 30, thus.

forming ways, or the like, to receive a closure nnember 33 (Figure 3) dovetailed as at 33 and 3,3

to mate with. the undercut grooves 3!! and 33 respectively, the partsbeing so dimensioned that when the closure member 33 is slid into place (in a direction from the left to the right as viewed in Figures 1 and 2) there is a snug fit suflicient V tohold'the member 33 against involuntary movement; moreover, I may also shape the parts as at133 and 33 (Figure 3)'and as at any. and 33h (Figure 2) to form substantially a wedge, whereby the closure member '33 may be forced home and wedged into closing position. Member 33 (Figure 3) has a transverse groove 33 whereby the using of the fingernail, or a screw driver; or the like, maybe made to'slide the member 33 out of the :ways'3l1'=3ll and thus expose thechamber 3% (Figures land 4) formed, in the member 30, and

thusalso to make accessible the assembly mem- In this sembly members or pins 32', and like small parts the closure 33 andwithdrawing the assembly member. 31, whereupon'the key plug l2 may be withdrawn from casing [0. Any extra parts that i 7 75 {may be: needed for repair are found in the chamof the mechanism. {In this condition the lock construction is sold and installed.

'tion, disassembly isreadily achieved by removing To hold the pin 32 in place and to preclude I chamber 30 21 place extra parts,,such' as extra tumblers l3 extra springs I52, extra as should oc'casionarise to .repair the construcber 3|] that is closure 33. 1

As above mentioned, the front flange l9 (Fi ure 2) abuts against the front'face of the door 23, casing I0 being received inside a suitable hole 26 in the door. The inside face of the door has secured to it a sheet metalplate 34 through which are to be passed screws 3533 threaded into side lugs 31-38 integrally, formed with the caS- ing I0, thuS'tO securely clamp the construction in the hole 20'- in the door 20. But in installation great difiiculty, loss of time, andinconveni ence, are sustained in'attempting to catch the screws 35-36 in the lugs 3138, respectively, and ac .cordingly, I provide the left-hand ends of the latter with large funnel-shaped entry ends TEL-38 respectively, being preferably in diameter several times the diameter of thescrews. Thus the screws are easily assembled to the threadedlugs 31-38.

The bolt-operating mechanism 22 is, of course,

thus uncovered by removal of mounted on the left-hand face of the door 20 (Figure 2) and goes over the plate above described. V r 1 V Moreover, the casing ID with its integrally formed features above-described, is of such configuration that it lends itself readily to diecasting and thus -to.1ess expensive construction.

7 It. will thus: be seen that there'has been pro-..

7 vided in this invention a construction in'which 7 the various objects hereinbefore mentioned, ,to-. 'gether with many thoroughly practical advantages, are successfully, achieved. 7 As many possible embodiments may be made of the above. invention and as. many changes might. bemadein' the embodiment above set forth, it isto be understood that all matter hereinbefore'set forth, or shownrin the accompanying drawing, is,

to be interpreted as illustrative and not in a limiting sense. r

I claim:-

1. In a lock construction, in combination,

casing having a bore for rotatably receiving a key plug, the rear. end of the bore being closedby a wall having a hole therein, a connectingbar passing through the hole and having meanson the inner end thereof to prevent it from going and having at its end'a recess for non-rotatable reception of the inner end of said connecting bar, said key plug having a peripheral groove, and said casing having an aperture opening into the bore in alinement with said groove, means extending from said aperture into said peripheral groove for holding said plug against axial movement, said aperture terminating at an outer portion of said casing, and meansfor closing over said aperture at said outer end. Y

through the hole, a key plug received inthe bore,

2. In a lock construction, in combination/a casing having a bore for rotatably receiving a key plug, the rear end'of theboreibeing closed;

by a walljhaving a hole therein, a connecting bar passing through the hole andhavin'g means on v the inner end thereof to prevent it from. going:

through the hole, a key plug received in the bore and having at its end a recess for non-rotatable reception of the'inner end of said connecting'bar said key plug having a peripheraligroove, andsa-idcasing having an aperture opening into the bore in alinement with said groove, means extending from said aperture into said peripheral groove.

'for holdingisaidplug against axial movement, said aperture terminating at an outer portion of a said casing, said casing having a chamber for receiving spare parts adjacent the outer, terminus of said aperture, and means operative to close 3. In alock construction, in combination, a casing having: a bore for rotatably receiving a key plug, the rear end of the bore being closed by a wall having a hole therein, a connecting bar passing through the, hole and having means on the inner end thereof to prevent it from going through the hole, a key plug'received in the bore and having at its end a recess for non-rotatable reception of the inner end of said connecting bar, said key plug having a peripheral groove, and said casing'having an aperture opening into the bore in alinement with said groove, means,

extending from said aperture into said peripheral groove for. holding said plug againstaxial movement, said aperture terminating at anouter portion of said casing, said casing having a chamber for receiving spare parts adjacent the outer terminus of said aperture, the side walls of said chamber being shaped to form slideways, and a closure member slidably received in said slideways for closing said chamber and extending also over the outer terminus of said aperture.

4. In a lock construction, in combination, a casing having a key plug rotatably mounted therein, said casing and key plug having coacting tumblers and springs and said casing having recess means separated from the exterior of said casing by a wall and said tumblers being adapted to coact with said recess means, means for detachably holding said plug against axial movement relative to said casing, means extending about said wall to form therewith a chamber for spare parts of the lock mechanism and means closing said chamber and preventing access to said detachable holding means.

5. In a lock construction, in combination, a casing having a key plug rotatably mounted therein, said casing and key plug having coacting tumblers and springs, said casing having a portion thereof hollowed out to form a chamber for receiving spare parts, of the lock mechanism, and opening on an exterior surface thereof, and means to close said chamber to retain such parts therein but also so as to provide ready access thereto when needed.

6. In a lock construction, in combination, a casing shaped to enter a recess in the member to which the lock construction is adapted and having a key plug rotatably mounted therein, said casing and key plug having'coacting tumblers and springs, said casing having a front escutcheon to rest against the front face of said memher, and means to the rear of said escutcheon and opening on an external surface of said casing forming a chamber with removable closure therefor for completely enclosing and for holding spare parts of the lock mechanism, whereby said chamber is inaccessible from the exterior of said member.

7. In a lock construction, in combination, a casing to be set into a recess in a member to which the lock construction is attached and having flange means for coacting with the front face of said member, a key plug rotatably mounted within said casing, said key plug and casing having coacting tumbler means, means forming a plurality of chambers within said casing and integral therewith and opening on an external surface thereof to the rear of said flange means, and a slidable cover adapted to completely close all of said plurality of openings, whereby, when said lock construction is attached to said member, said chamber-forming means and said cover are inaccessible from the exterior of said member.

8'. In a lock, construction, in combination, a casing tobe. set into a recess in-a member to which the lock construction is attached and having flange. means for coacting with the front face of said member, a key plug rotatably mounted within said casing, a locking pin for said plug, said casinghaving a front, escutcheon for resting against the front face of said member, said casing having a plurality of chambers located to the rear of said escutcheon, one of said chambers being substantially rectangular in form and having a relatively large capacity for containing spare parts of thelock mechanism and another of said chambers being of relatively small capacity for holding said locking pin to retain said key plug Within said casing, whereby, when said lock construction is attached to said member, said chamher-forming means andv said cover are inaccessible from the exterior of said member.

9.. In a lock construction, in combination, a. casing having a key plug rotatably mounted therein, said casing and key plug having coacting tumblers and springs, said casing having a portion thereof hollowed out to form a chamber for receiving spare parts of the lock mechanism, said chamber having beveled edges along a portion of its length, and means to close said chamber, said means comprising a spatulate cover plate, the edges of the broader portion of which are beveled in such a manner as to, coact and lock with said beveled edges of said chamber.

10. In a lock construction, in combination, a casing to be set into a recess in a member to which the lock construction is attached and having flange means for coacting with the front face of said member and said casing having a key plug rotatably mounted therein, said casing and key plug having coacting tumbler means, said casing having said flange means formed into a front escutcheon for resting against the front face of said member, means to the rear of said escutcheon for adjustably coacting with said'member and said casing to hold the latter in said recess throughout a certain range of different depths of said recess, and means always effective throughout said range of difierent depths of recess and positioned to the rear of said escutcheon and opening on an external surface of said casing forming a chamber for holding spare parts of the lock mechanism, a cover plate for said chamher, and means also positioned to the rear of said escutcheon for holding said cover plate in covering position, whereby, when said lock construction is set into said recess and attached to said member, said cover plate is exposed to the recess. in said member but not to the exterior of said member..

11. In a lock construction, in combination, a casing to be set into a recess in a member to which the lock construction is attached and having flange means for coacting with the front face of said member having a key plug rotatably mounted therein, said casing and key plug having coacting tumblers and springs, said casing having a front escutcheon for resting against the front face of said member and an opening to the rear of said escutcheon, said opening having beveled edges adjacent a portion of the top edge thereof, and a spatulate cover for said chamber, the broadened portion of said spatulate cover comprising angular fianges adapted to engage said beveled edges of said chamber.

' 12.;A casing having mounted therein and coacting therewith key controlledvmeans, said casing having a1front flange through which said means is made accessible for the insertionfiofa 5 key, said flange abutting against the outer face of the member on which thecasing is mounted, said casing projecting rearwardly of'said'lflange into a recess insaid member, and means forming a chamber 'with 'a movableclosure for the open 10,3 endcthereof for holding the spare parts of said key controlled means theopen end of said chamber and said'movable closure beingexposed to said recess. i V v V g a s 13. A casing having mounted therein and co- 15 acting therewith key controlled means, said casing" having a front flange through which said means is made accessible for the insertion of a key, said flange abutting against the outer face ofthe member on which'the casing is mounted,

said casing projecting rearwardly of said flange into arecess in said member, means forming a chamber for'holding spare parts of said key controlled means, and a cover for said chamber for closing the latter to retain therein 'saidnspare' parts, said cover being exposed to said recess 14. A casing having mounted therein and coacting th erewit h key controlled means, said casinghaving a front flange through which said means is made accessible for the insertionrof a "key, said flange abutting against the outer face of the member on which the casing is mounted, said casing projecting rearwardly of said flange into a recessin said member, means forming a chamber in said casing and anotherwise-unse- V cured cover, for said chamber exposed to said're cess.

15.-A lock construction as claimed in claim 10 in which there is also means for rholding'said, key plug in assembled relation to said "casing;

said last-mentioned means being positioned to be substantially inaccessible except upon changing the position of said cover plate relative to said chamber.

V HENRY F. 

